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0733110117木蟲 (小有名氣)
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[求助]
急急急~！摘要漢譯英，自己翻譯改了兩次了，老師說(shuō)不行，大家?guī)拖旅Γ?
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摘 要 本課題主要研究了在不同條件下葫蘆脲的合成方法并對(duì)其衍生物羥基葫蘆脲的合成及其性能做了一些初步探索。首先以尿素和乙二醛為原料在酸性條件下制得甘脲，然后以甘脲和甲醛為原料分別用稀硫酸催化法、濃硫酸催化法、濃硫酸催化-除水法制得葫蘆脲，用過(guò)二硫酸鉀和所得的葫蘆脲混合加熱反應(yīng)，將反應(yīng)產(chǎn)物經(jīng)堿性溶液、丙酮、蒸餾水處理后得到羥基葫蘆脲。所得產(chǎn)物經(jīng)紅外光譜（FT-IR）表征，并結(jié)合薄層色譜（TLC）和高效液相色譜（HPLC）分析檢測(cè)可知產(chǎn)品中含有大量高純度的目標(biāo)產(chǎn)物。然后利用熒光光譜法、電化學(xué)分析法對(duì)羥基葫蘆脲對(duì)熒光素的包結(jié)作用進(jìn)行了初步地探索，實(shí)驗(yàn)表明羥基葫蘆脲和熒光素的包結(jié)物的熒光強(qiáng)度隨羥基葫蘆脲量的增多，呈現(xiàn)降低的趨勢(shì)。 時(shí)間很急�。∠Ｍ蠹夷芸禳c(diǎn)給我答案��！ 謝謝了！ [ Last edited by 0733110117 on 2011-6-7 at 20:46 ] |
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zuodg
鐵桿木蟲 (正式寫手)
有為青年
- 翻譯EPI: 180
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【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
sltmac(金幣+1): 謝謝交流~ 2011-06-07 22:25:46
0733110117(金幣+30, 翻譯EPI+1): 你真是太厲害了！非常謝謝你的幫助~！24小時(shí)后，如果老師沒(méi)什么意見(jiàn)了，我把剩下的再給你~！ 2011-06-07 23:19:22
sltmac(金幣+20): 3Q 2011-06-10 15:35:02
sltmac(金幣+1): 謝謝交流~ 2011-06-07 22:25:46
0733110117(金幣+30, 翻譯EPI+1): 你真是太厲害了！非常謝謝你的幫助~！24小時(shí)后，如果老師沒(méi)什么意見(jiàn)了，我把剩下的再給你~！ 2011-06-07 23:19:22
sltmac(金幣+20): 3Q 2011-06-10 15:35:02
| This work mainly investigates synthetic methods of cucurbituril under different conditions and preliminary exploration of synthesis of hydroxylcucurbituril and its properties. First, glycoluril was prepared with urea and glyoxal under acidic conditions. Then cucurbituril was obtained through dilute sulfuric acid catalysis, concentrate sulfuric acid catalysis and concentrate sulfuric acid-dehydration with glycoluril and formal as substrates. Cucurbituril was then heated with potassium persulfate, and then treated with alkaloid solutions, acetone and dilute water, respectively. In this way, hydroxylcucurbituril was obtained. Compounds were characterized with FT-IR. Results from TLC and HPLC jointly indicated high ratio of objective compounds with high purity. Effects of hydroxylcucurbituril on fluorescein had been evaluated with fluorescence spectroscopy, electrochemical analysis. Research indicated that with increase of hydroxylcucurbituril, fluorescence intensity of inclusion complex of hydroxylcucurbituril and fluorescein tended to decrease. |
2樓2011-06-07 22:15:41
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